A polymer-supported distannane 1 was prepared by treatment of tin halide resin with lithium naphthalenide or sodium naphthalenide in THF. The content of the polymers 1 was determined to be 0.95 to 1.13 mmol/g tin as ditin. The polymer-supported distannane reagent was successfully applied to radical cyclizations of acyclic α-haloesters to yield γ-butyrolactones.
聚合物负载distannane 1是通过用
锂萘基或
萘基
钠,在THF卤化
锡树脂的制备。测得聚合物1的含量为二元
锡为0.95-1.13mmol / g
锡。聚合物负载的
二锡烷试剂已成功应用于无环α-卤代酸酯的自由基环化反应,生成
γ-丁内酯。